Ball-bearing.



O. 734,194. PATENTED JULY 21, 1903.

' A. RIEBE.

BALL BEARING.

APPLICATION FILED APR. 17. 1900.

N0 MODEL.

UNITED STATES.

Patented July 21, 1903.

PATENT OFFICE.

AUGUST RIEBE, OF BERLIN, GERMANY, ASSIGNOR TO DEUTSGHE WAFFENMUNITIONSFABRIKEN, OF BERLIN, GERMANY, A FIRM.

BALL-BEARING.

SPECIFICATION forming part of Letters Patent No. 734,194, dated. July21, 1903. Application filed April 17, 1900. Serial No. 13,241. (Nomodel.)

Prussia, German Emperor, residing'atlo Zwinglistrasse, Berlin, Kingdomof Prussia German Empire, have invented certain new and usefulImprovements in Ball-Bearings,

and-I do hereby declare the following to be a full, clear, and exactdescription of the invention, such as will enable others skilled in theart to which it appertains to make and use the same.

This invention-relates to an improvement in ball-races forball-bearings; and it mainly refers to that type of ball-bearings foraxleboxes in which a number of rows or sets of balls are arranged inseveral separate rings or races and adapted jointly to travel incorresponding annular grooves formed on the axle or shaft or in a ringfixed thereon.

The distinguishing feature of the present invention is that the annulargroove which forms the path or race proper for the balls to travel in ismade open on one side by being cut away below the bottom of the groove,the opening so formed enabling the balls to be inserted, removed, orexchanged, as required, while normally such opening, gap, or notch isclosed by means of a plate or fillingpiece fixed in position by a screw.

In the accompanying drawings, Figure l is a section of two ball-racescombined in accordance with this invention, while-Fig. 2 is an elevationof a ball-race and also represents in section two projections, ribs, orlugs Z, between which the head of the fasteningscrew is located.

The lugs Z, formed in a suitable. position on the box or case of thebearing, serve'to prevent the ball-race ring 4; from turning with theshaft, such ring being, moreover, retained in position within the box orcase at the top- 5. e-., the point which takes up the weight or pressureof the bearing by a stop or abutment b. The balls a move in a groove inthe interior ofthe said ring 1) and in a corresponding groove formed ina ring a, fixed on the shaft or spindle 2'. To enable the balls to befilled in between the rings to and 0, an

opening or notch is cut from one side in the inner surface of the ring1: at the bottom of the groove, thus forming a recess extending from'oneside to about the middle of said ring and providing a lateral outlet forthe balls, so that the balls may here be inserted or removed singly. Themeans of closing this gap consists of a small plate or fillingpiece 0"of suitable shape, which upon being fitted to the opening accuratelyfills the same and completes the groove in the interior of the ring '1),such plate or filling-piece being secured in position by means of ascrew 8, in-

serted and tightened from outside.

As before stated, the heads of the screws 8, in conjunction with thelugs or ribs Z projecting from the box of the bearing, serve to checkany free rotation of the ring o. The strain applied to the bearing is inthe main taken up by the portion of the ring opposite to that where thefilling-piece is situated.

The opening and the filling-piece may, if preferred, be applied to theinner ring u, though it will not then prove so effective.

What I claim is- In a ball-bearing, the combination with a shaft, of anexternally-grooved ball-race or ring to receive the shaft, aninternallygrooved ball-race or ring, one of said races or rings having asmall recess cut therein extending from one side to the middle of thering, a filling-piece fitting said recess and completing the innersurface of the race or ring, a screw to fix the filling-piece inposition and lugs or ribs to engage the head of

